371861 has 6 divisors (see below), whose sum is σ = 432630. Its totient is φ = 318696.

The previous prime is 371857. The next prime is 371869. The reversal of 371861 is 168173.

It can be written as a sum of positive squares in only one way, i.e., 207025 + 164836 = 455^2 + 406^2 .

It is not a de Polignac number, because 371861 - 2² = 371857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 371861.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 371861.

It is not an unprimeable number, because it can be changed into a prime (371869) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3746 + ... + 3843.

It is an arithmetic number, because the mean of its divisors is an integer number (72105).

2³⁷¹⁸⁶¹ is an apocalyptic number.

It is an amenable number.

371861 is a deficient number, since it is larger than the sum of its proper divisors (60769).

371861 is an equidigital number, since it uses as much as digits as its factorization.

371861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7603 (or 7596 counting only the distinct ones).

The product of its digits is 1008, while the sum is 26.

The square root of 371861 is about 609.8040668936. The cubic root of 371861 is about 71.9107046297.

The spelling of 371861 in words is "three hundred seventy-one thousand, eight hundred sixty-one".